Sofa



FIG. 1 is a front view of the design for a sofa;

FIG. 2 is a rear view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a left perspective view thereof;

FIG. 8 is a right perspective view thereof;

FIG. 9 is a left perspective view of the sofa in a slightly inclinedposition;

FIG. 10 is a right perspective view of the sofa in the slightly inclinedposition;

FIG. 11 is a left perspective view of the sofa in a moderately inclinedposition;

FIG. 12 is a right perspective view of the sofa in the moderatelyinclined position;

FIG. 13 is a left perspective view of the sofa in a highly inclinedposition;

FIG. 14 is a right perspective view of the sofa in the highly inclinedposition;

FIG. 15 is a left perspective view of the sofa in a fully inclinedposition; and,

FIG. 16 is a right perspective view of the sofa in the fully inclinedposition.

The dotted lines shown on the article represent topstitching. The brokenlines shown in the drawings are for illustrative purposes only and formno part of the claimed design.

The ornamental design for a sofa, as shown and described.